<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    // 变量的声明
    // var关键字
    var currentTime = "16:00"

    var currentTime1;
    currentTime1 = "16:02"
    currentTime1 = "17:00"

    var name, age, height
    name = "why"
    age = 18
    height = 180

    var name = "why", age = 18, height = 1.88
    console.log(name, age, height);
  </script>
</body>

</html>